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https://issues.apache.org/activemq/browse/AMQCPP-109?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timothy Bish resolved AMQCPP-109.
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Resolution: Fixed
fixed in trunk
> Exception when acknowledging null messages, originating from the receipt of
> an ObjectMessage
> ---------------------------------------------------------------------------------------------
>
> Key: AMQCPP-109
> URL: https://issues.apache.org/activemq/browse/AMQCPP-109
> Project: ActiveMQ C++ Client
> Issue Type: Bug
> Components: Openwire
> Affects Versions: 2.0
> Environment: Machine: Windows XP
> Broker: ActiveMQ 4.1.1
> Various client javaapplications producing ByteMessages, TextMessages and
> ObjectMessages.
> A single C++ application built with Visual C++ 2005.
> Reporter: Brendan Cashman
> Assigned To: Nathan Mittler
> Fix For: 2.0.1
>
>
> The single C++ client that wants to consume TextMessages and simply ignore
> the ObjectMessages. In the current configuration the C++ app receives null
> messages for each ObjectMessage. When using Openwire, the connector tries to
> acknowledge the null message and throws an OpenwireConnectionException (see
> line 973 of OpenWireConnector::acknowledge from release 2.0).
> The acknowledge mode in the Session is set to DUPS_OK_ACKNOWLEDGE, but it
> appears (from looking at the source) that this issue will occur in other
> modes.
> It looks like this problem won't occur using Stomp unless the acknowledge
> mode is set to CLIENT_ACKNOWLEDGE.
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